Loose-leaf binder.



PATBNTED JULY 31, 1906.

No. 827,461. v

I v J. s. MODONALD.

LOOSE LEAF BINDER. APfLIUATION TILED JAN. Z6 .-190 5.

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1m; NORRls PETERS 00., wnsnmcran, n. c.

UNITED STATES PATENT- onrron .11

JAMns-s. MQDONALD, or CHICAGO, ILLINOlS, AssionoR roai-sn ooivntn COM-PANYQOF ornc e-o, ILLINOIS, A ooRPonArroN or l miters.

LOOSE-LEAF BINDER.

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Application filedJanuary 26, 1905. Serial No. 242,765,

specification.

My invention relates to binders adapted to hold together suitable loose sheets of paper, and it is particularly useful in the shipping departments of mercantile establishments where bills, invoices, 800., can be temporarily filed away quickly and neatly and without much trouble.

My improvement permits of the bills or other printed records being removed separately or in numbers from the book and oth-' ers being inserted ad libitum without having to take the book entirely apart, and this is performed entirely by manual effort without the necessity of using screw-drivers, lock-' keys, or wrenches, as, is the custom in the loose-leaf books now on the market. This I accomplish by the means hereinafterfully described and illustrated, and as more particularly pointed out in the claims.

In the drawings, Figure l is a perspective view of my invention, showing the binder in closed position. Fig. 2 is a top plan view of the same. Fig. 3 is a detail vlew of one of the vertical locking-posts drawn to an en-v larged scale. Fig. 4 is a similar view of a modified form of post. Fig. 5 is an end view of the engaging face of a locking-cam used in connection with the post shown in Fig. 3. Fig. 6 is a similar view of a cam used in connection with the post shown in Fig. 4.

Referring to the drawings, A and B represent, respectively, the top and bottom covers of a loose-leaf binder, which are near the back of the book flexibly secured to their respective binding-plates A and B, which latter are formed of metal and have inserted between them the loose leaves of the matter to be temporarily bound. 1

Secured to the lower clamping-plate in any suitable manner are two or more vertical posts I) b, that arise in a plane parallel to each other and at right angles to the bottom plate and are provided with a'series of transverse serrations or corrugations b b, that are ar ranged, preferably,

in a slightly-inclined direotion. These posts pass through suitable guide-openings inthje top plate, located-in.

' alinement therewith, and extend above said plate a short distance.

plates'are preferably perforated "and slotted in the usual manner on their binding edges The loose leaves ofmatter to be inserted between said clampingand are slipped over or on saidposts and I sorted; between said clampingplates A and B and then compressed asfar as ,possible" and securely locked between the same by means of suitable -cairn-locks O C. These cam-locks consist of. pivoted circular disks having radial handles 0 c, that are stamped out of the same piece of metal of"which-th e disk is made and ashortdistance from said ilisk are provided; with a-suitable upturned 1p 0. pivotalopenings therein, throughwhich a suitable pivot-screw 1) passes and fastens the" me Q.' Ql QP, o the upper amp ngr 'at a point contiguous" to the vertical posts and in alinement with a vertical plane struck through the respective centers of posts I) b. The disk forming these cams is suitably bent or deflectedupward at its edge, as shown in Fig. 5 of the drawings, so that the engaging face thereof will come in contact with the inclined serrations at the same angle therewith and force the binding-plates together. As

the plates from which the cams are struckv will have certain yielding action when forced into engagement with the binding-posts, the

force exerted by the slightly-displaced metal will be such as to effectually prevent creeping of the cams when in engagement with the shoulders of the posts. The modified cam shown in Fig. 6 is used in connection with the post illustrated in Fig. 4 and has its surface entirely flat. When the loose leaves have been compressed to their desired position, the handles are turned until the faces of the cams come into contact with and engage the serrations on the vertical posts, and when they have been tightly engaged the clampingplates will be securely heldand prevented from further separation. These serrations being inclined cause the clamping-plates to The disks have ecc'entrically-arranged still further .compress and bring the loose matter closer together than'could ordinarily sire to be-limited to any particular form of serration, still I Wish it understood that either form may be used Without departing from the spirit of my invention.

What I claim as new is 1. A loose-leaf binder comprising top and bottom clamping-plates; vertical posts arising from said bottom plate provided with inclined serrations and passing through openings in said top plate; and a locking-cam for each post comprising eccentrically-pivoted plates having deflected edges rising above the planes of the disks each having a handle projecting therefrom arranged mediate said posts in the same vertical plane therewith and adapted to come in direct contact with and engage the serrations on said posts and lock the same.

2. A loose-leaf binder comprising top and ing from said bottom plate provided with inclined serrations and passing through openings in said top plate; and a locking-cam for each post comprising eccentrically-pivoted plates having deflected edges rising above the planes of the disks each having a handle projecting therefrom arranged mediate said posts in the same vertical plane therewith which handle near its outer end is provided With an upturned ii and said cam being adapted to come in irect contact with and engage the serrations on said posts and lock the same, the engaging face of the cam being deflected and inclined at an angle to the plane of the disk forming said cam.

4. A loose-leaf binder comprising top and bottom clamping-plates; serrated posts arising from the bottom plate; the said top plate having openings to receive the posts, cams eccentrically pivoted in operative relation to said posts and comprising plates having deflected edges rising above the planes of the disks and adapted to engage the serrated posts.

In testimony whereof I have hereunto set my hand this 20th day of January, A. D. 1905.

JAMES S. MoDONALD.

Witnesses FRANK D. TnoMAsoN, E. K. LUNDY. 

